Finding the Fourth Proportional to 21,401.98, 29,532.81 and 12,324.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,401.98 : 29,532.81 = 12,324.91 : x
2. Step 2: Convert to fraction form
   21,401.98/29,532.81 = 12,324.91/x
3. Step 3: Cross multiply
   21,401.98x = 29,532.81 × 12,324.91
4. Step 4: Simplify right side
   21,401.98x = 363,989,225.30
5. Step 5: Solve for x
   x = 363,989,225.30/21,401.98
6. Step 6: Final answer
   x = 17,007.27